layui.use(['layer'],function(){
    var $ = layui.$,
        layer   = layui.layer;
    $(document).keydown(function() {
        var keynum
            ,e = arguments[0];
        if (window.event) {
            keynum = e.keyCode;
        } else if (e.which) {
            keynum = e.which;
        }
        if(e.altKey && keynum == 76){
            window.parent.LockClick();
        }
    });
});